Everyone told me to use caustic soda. They called it "the heavy artillery," the chemical bulldozer that would obliterate the greasy, hair-laden monster lurking in my pipes. I bought the granules—the white, crystalline flakes that looked deceptively like sugar but possessed the temperament of a wounded dragon.
Use a small cup or a wet/dry vacuum ( rated for liquids ) to remove the neutralized water. Dispose of it down the toilet (lots of flushing water) or outside away from pets. drain blocked with caustic soda
If you have tried the above and the water still doesn’t move, call a professional immediately. Tell the plumber, "I poured caustic soda down the drain, and it didn't clear." Everyone told me to use caustic soda
If you poured in a gallon of crystals and hot water, only to find the water now sits on top like a toxic swimming pool, you have a chemical reaction gone wrong. Use a small cup or a wet/dry vacuum
But what happens when the magic doesn’t work? Worse, what happens when the caustic soda seems to have made the blockage worse ? You now have a drain blocked with caustic soda—a dangerous, chemical-filled standstill.